Display device



DISPLAY DEVICE Filed Feb. 28. 1928 5 Sheets-Shea?I l Oct. l, 1929. E. F. HAGER DISPLAY DEVICE Filed Feb. 28. 1928 3 sheets-sheet 2 Oct. 151929. E. F. HAGER 1,729,828

DISPLAY DEVICE Filed jFeb. 28, 1928 3, sheets-sheet 3 of the belt.

ing 30 of the cabinet 10 is connected to the stage flooring by means of four corner posts 31, 32, 33 and 34 and four intermediate posts 35. Four bearings 36, 37, 38 and 39 are `secured on the cabinet floor and in these bearings the main shaft 40 and the driven shaft 41 are mounted. The device is operated from the main shaft 10, preferably by an electric motor connected direct to the shaft by a worin and worm-gear, but any other suitable means might be employed. Drums 12 and .413 are secured on the shafts l0 and Ll1, and on these a belt 14s is driven in the direction indicated by the arrow on Fig. 4L.

At each end of the belt 411, elevators 45 and l0 are located, their recessed, top surfaces being aligned evenly with the top of the belt so that the merchandise may be transferred from and'to the elevators by the belt in the manner to be explained later. The elevators are slidably mounted on the vertical supports 47 and` 18 in which slots 119 `and .50 are provided. Tongues 51 and 52, forming parts of the elevators, engage in these slots and are held in correct relation to the vertical supports by parts 53 and 5-1- which also act as counterweights in overcoming` the tende ency of the elevators to tilt when a load is placed upon them.

The elevators are raised and lowered in the following manner. Two long levers 55 and 56, pivoted in bearings57 and 58, have their free ends engaged in slots 59 and 60 formed in brackets on the elevators, and each is provided with a roller 61 and 62. These rollers engage on'a cam G8 which is secured on a shaft G4, mounted in bearings 65 and 66.v

This shaft is driven from the main shaft Ll0 by a chain 67 operated on sprocket wheels `68 and 69. It is evident that as the cam 63 rotates, the elevators will be lifted and low-` ered due to the shape of the cam-face.

As the merchandise, in this particular case cans 70 are illustrated, travels on the belt let in the direction indicated, they are, one at a time, pushed on the elevator 15 by the action After the elevator -15 ascends the can is moved off the elevator and onto one of the platforms 24C by the rocker-lever 71. The actuating.mechanism for this lever will bedescribed later. lVhen the platform reaches the other side of the stage the can is guided onto the elevator 116 by the guide 72. The elevatorsv now descend and the can is returnedto the belt 111 by means of the rocker- .lever 73.

The rocker-levers 71 and 7 3 are actuated by the mechanism nowto be described.l Along bar 7 4 is reciprocatingly mounted in slots in 'the intermediate, front posts 35 and the bar is reciprocated by a cam lever 7 5 engaged between two rollers 76 and 77 which are mounted on the bar. cam lever by a cam 78, mounted on the shaft vGl and engaging on its face with a roller 79 Motion is imparted to the mounted on the cam lever. The contour of the cam face is such as to cause the bar to reciprocate and a tension spring 80 always keeps the roller 79 against the cam. The lever 7 lis mounted on a shaft 81 rotating in a downwardly extending bearing 82 which is secured under the stage flooring, and to the lower end of this shaft a'lever 83 is secured. The free end of this lever is provided with a slot 84 in which a pinV 85, secured on the bar 74, engages. T he lever 73 is rigidly mounted on a vertical shaft 86 on which is also rigidly mounted a lever 87. This lever is provided Awith a slot 88 at its outer end in which a pin,

also mounted on the bar 7 l, engages. It will be plainly seen, that as the cam 78 rotates the levers 71 and 7 3 are rocked.

Referring now to Figs.` 6, 7 and 8. The sprocket wheel 28 is driven by a chain 91 which-passes over a sprocket wheel 90 mounted on the shaft 611 as well as over the idlers 92 and 93. These idlers are mounted on shafts in the bearings 94 and 95 which are suspended below the stage flooring on a block 96.

The belt 14 travels on pulleys 97, 98, 99 and mounted on the vertical shafts which are formed integral with the corner posts 81, 8L, 38 and The belt is driven byra ball chain 101 which engages in a groove 102 formed near the top of the pulley 98. This ball chain is driven by a gear 103 mounted on the main shaft and passes over two idlers 104 and 105 which are angularly mounted under the stage flooring on the bearing 106.

This bearing Ahas been omitted in Fig. 8 but is plainly shown in Fig. 6.

As merchandise might accidentally be dis placed while the device is in operation, an automatic, safety stop has been provided; this stop is only used when an electric motor is employed for driving the device. The stop consists of a sprocket wheel 107 rotatingly mounted on shaft 64E and driven by a chain 108 actuated by va sprocket wheel 109 which is mounted on the main shaft 410. The sprocket wheel 107 is provided with a clutch 110 which engages on a clutch pin 111 secured in the shaft 04. A compression spring 112, adj usted by a cap screw 113 threaded into the endof the shaft, normally holds the clutch in engagement with the pin, but under increased friction the spring allows the clutch to disenga'ge from the pin. An electric switch 114, having a lever arm 115, is so located that when the clutch is disengaged the lever arm oper- `ates the switchand breaks the electric cur- 24 and down again to the belt by elevator 16. Double doors 117 and 118 are formed in the partition 22 and these doors are opened by the platforms as they pass through. rl`hey are closed after the passage of each platform by the spring 11S) which acts on the doors through the links 120, 121 and 122. Double doors 123 and 1211 are also formed in partition 19 but these doors are opened by means of a cam 125 which rocks a lever 126 secured on a vertical shaft 127 to which isalso secured the door-opening mechanism. rIhis consists of a lever 128 and three links 129, 130 and 131. The shaft is supported in bearings 132 and 133 and a tension spring 134 always tends to hold the lever 126 in contact with the cam 125. The cam 125 is mounted on the shaft on which the sprocket wheel 29 is also mounted.

It will be seen that all that is disclosed to the observer are the objects carried across the stage and the empty platforms moving in the opposite direction, the rest of the conveying mechanism being hidden. To make the oper ation of the device still more perplexing, the platforms are painted in various colors or otherwise differentiated. In this manner, if different objects are carried on the conveyer they will be carried on a different platform each time they pass across the stage; this is due to the difference in carrying capacity of the two conveyers.

It will be understood that I d o not wish to limit the invention to ust the embodiment illustrated, but that I expect to utilize it to the full extent of the annexed claims.

Having described my invention, what I claim as new and wish to protect by Letters Patent is:

1. In a conveyer of the class described, a lower conveyer, an upper conveyer, elevators connecting with both ends of said conveyers, said elevators operated by a pair of crossed levers actuated by a rotating cam, and means for transferring objects from said conveyers to said elevators and from said ele@ vators to said conveyers,

2. In a conveyer of the class described; a lower, belt conveyer; an upper, horizontal, chain conveyer; elevators connecting with both ends of said conveyers, said elevators operated by a pair of crossed levers actuated by a rotating cam; and means for transferringobjects from said conveyers to said elevators and from said elevators to said con* veyers.

3. In a conveyer of the class described; a lower, belt conveyer; an upper, horizontal, chain conveyer provided with individual obj ect-carrying platforms; elevators connecting with both ends of said conveyers; said elevators operated by a pair of crossed levers actuated by a rotating` cam; and means for transferring objects from said conveyers to conveyers,

l. In a device of the class described, a 'beltV conveyerscontained in a cabinet, a horizontal f chain conveyer'provided with obj ect-carrying platforms a-nd operated in the top of said.

cabinet, elevators connecting with both of said conveyers, said elevators operated by a air of crossed levers actuated b a rotatingl cam, and means for transferring objects from said conveyers to said elevator and from said elevators toy said conveyers,

5. Iny adevice of the class described; a belt conveyer concealed in a cabinet, a horizontal chain conveyer having object-carrying platforms operated on top of saidy cabinet, ele# vatorsconnected with both ends of both of said conveyers, said elevators operated by a pair loit-crossed levers actuated by a rotating` cam7 means for transferring objects from said elevators to said belt conveyer and said platforms and from said belt conveyer and platforms to said elevators, and suitable scenery erected on top of said cabinet.

6. In a device of the class described, a belt conveyer concealed in a cabinet, a horizontal chain conveyer having object-carrying platforms op Irated on top of said cabinet, elevators connected with both ends of both of said conveyers, saidelevators operated by a pair of crossed levers actuated by a rotating cam, means for transferring objects from said elevators to said belt conveyer and said platforms and from said belt conveyer and platforms to said elevators, suitable scenery erected on top of said cabinet, and said scenery so constructed as to conceal both ends of said chain conveyer but allow ythe passage of said platforms and the objects carried` thereon.

'7. In a device of the class described, a belt conveyer concealed in a cabinet, a horizontal chain conveyer, having object-carrying platforms operated on top of said cabinet, elevators connected with both ends of both of said conveyers, said elevators operated by a pair of crossed levers actuated by a rotating' cam, means for transferring objects from said elevators to said belt conveyer and said platforms and from said belt conveyer and platforms to said elevators, suitable scenery erected on top of said cabinet, said scenery so constructed as to conceal both ends of said chain conveyer, and automatically operated doors provided in said scenery.

8. In a device of the class described, a belt conveyer concealed in a cabinet, a horizontal chain conveyer having object-carrying platforms operated on top of said cabinet, elevators connected with both ends of both of said conveyers, said elevators operated by a pair of crossed levers actuated by a rotating cam, means for transferring objects from said elevater to said belt conveyer and said platforms and from said belt conveyer and platforms to said elevators, suitable scenery erected on top of said cabinet, said scenery so constructed as to conceal both ends of said chain conveyer7 automatically operated doors provided in said scenery, and the object-carrying platforms so marked as to be distinguishable one from another.

9. In a device oic the class described, a belt conveyer concealed in a cabinet, a horizontal chain conveyer having object-carrying platforms operated on top of Said cabinet, elevators connected With both ends of both of said conveyers, said elevators operated by a pair of crossed levers actuated by a rotating` cam, means for transferring objects from said elevators to said belt conveyer and said platform and from said belt conveyer andplatforms to said elevators, and automatic means for stopping the device should any object conveyed thereon become displaced.

EMIL F. HAGER. 

